Determination of Optimum Seed Sources for Paper-pulp Wood of Masson Pine

Based on the preliminary selection of stem volume and wood basic density, 30 superior seed sources of 12-year-old were selected for pulping test.The results showed that there were remarkable differences for the most wood chemical components, pulp and papermaking properties among different seed sources.Through a comprehensive analysis on the profits and costs per dry tons of pulp from different seed sources, it was found that 6 seed sources including Chongyi of Jiangxi,Qinqi of Guangxi, Luoding, Yinde, and Chaoguan of Guangdong and Yongding of Fujian are the optimum ones for paper-pulp wood of masson pine.These optimum seed sources are distributed over the southeastern end of Nanling Mountains,eastern side of Yunkai Hill and southern end of Wuyi Mountains.